课时作业27（必修5，module 3） ⅰ．完成句子 1．我无法解释他失败的原因，只有他本人知道。 i cannot ______ ______ his failure，which only he himself knows. 2．老板警告我们别违反车间的规定。 the manager warned us ______ ______ the rules made for the workshop. 3．你认为她的美丽能弥补她的愚蠢吗？ do you think her beauty could ______ ______ ______ her stupidity? 4．注意那些烟花，最小的火星都能使它们爆炸。 be careful with those fireworks；the slightest spark could ______ ______ ______. 5．他表现出若无其事的样子。 he acted ______ ______ nothing had happened. ⅱ．单项填空
